This article is based on a dissertation completed under the direction of Dr. Dean E. Williams. The research was supported by Grant RD-319 from the United States Office of Vocational Rehabilitation, Department of Health, Education, and Welfare.

This article is based on a dissertation completed under the direction of Dr. Dean E. Williams. The research was supported by Grant RD-319 from the United States Office of Vocational Rehabilitation, Department of Health, Education, and Welfare.×

Walter L. Cullinan (Ph.D., University of Iowa, 1961) is Assistant Professor, Department of Speech, School of Education, Boston College.

Walter L. Cullinan (Ph.D., University of Iowa, 1961) is Assistant Professor, Department of Speech, School of Education, Boston College.×